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“Are you sure you don’t need help, Kacchan?” Izuku asks as he nervously peaks in from the living room.
Katsuki shushes their little one’s soft whines as he bounces her in his arms while tending to the food he was cooking on the stove.
“I’m fine, my love. You’re supposed to be relaxing, remember?”
Katsuki feels like he’s repeated this very sentence at least a thousand times today to his worried omega. Izuku fiddles with his fingers as he watches his alpha balance the pup and cooking. He’s been watching Katsuki all day, a nervous flurry behind him as he tended to the baby, made him breakfast in bed, gave Hikari her bottles, and now made dinner for the two of them. Katsuki would be offended by the scared scent his omega has been giving off all day if he didn’t find it so utterly endearing how protective his little mate is since the birth of their pup.
Izuku admittedly was having a much tougher time since the birth. He actively had to be told to refrain from doing hero work while pregnant, but now that their little one was here, Izuku’s been a bundle of nerves. His anxiety had skyrocketed, prompting him to take an extended leave from work. Unfortunately, with his protective instincts kicked into overdrive, Izuku’s old obsessive behaviors have also been notched up. While it did wonders for Izuku’s hero work, it makes him a helicopter mom to the nth degree.
Katsuki picks up the scent of his mate as a flash of heat strikes Izuku while watching Katsuki kiss and coo at their child. It’s so familiar to Katsuki, the scent of his omega getting hot and slicking up for him. And just as suddenly as Katsuki’s alpha perks up at the scent, he nearly whines as the scent of fear that radiates from Izuku permeates their kitchen. It kills Katsuki that he can’t pull his omega against him and hold him with their pup, assure him that nothing will happen to Hikari. It’s like Izuku shuts himself down from feeling anything that doesn’t have to do with Hikari.
Katsuki turns to look at Izuku, sees the overwhelming concern and panic in his eyes, and gives in. He walks over to Izuku, bending down to scent his mate, rumbling in his chest as Izuku purrs back. Izuku kisses Hikari, his purring settling the crying infant.
“I’m trying to be good… But, I haven’t nursed her all day, so I should take her while you’re doing that.”
And Izuku was right about that. He has been mostly good about letting Katsuki tend to them both today, and to stop his thought spiral before it begins, he hands Hikari off to Izuku. There may have been a tiny selfish motivation for Katsuki to give in. The feral need that overtakes him when he watches Izuku nurse their little one. The stiff peak of his nipples dripping with milk. Katsuki’s mouth waters at the thought, but he reigns it in as he kisses Izuku softly on the lips.
“I want her back when you’re done. Dinner will be ready, and I'll hold her while you eat.”
Izuku already wears a pretty pout on his lips but Katsuki swats his ass softly as he sends him back into the living room. Katsuki, of course, lingers in the doorway to watch Izuku sit with his legs crossed on the couch, fitting his nursing pillow around his waist and resting Hikari on it. Izuku coos at the baby, smiling happily and talking softly enough that Katsuki can’t hear him to distract her from any fussing as he lifts his shirt.
Katsuki feels like a Victorian man who's just seen a flash of ankle for the first time as he gets a look at the milk filled pecs, pretty pink nipples already leaking. He very nearly feels his claiming fangs extending as if he hadn’t already marked Izuku during their first heat and rut they shared together. They were it for each other, and Katsuki would do anything to get Izuku through this separation anxiety, to remind him that he can rely on his alpha to take care of him and their family.
Hikari latches onto Izuku’s pert nipple and begins to suckle as Katsuki wishes he can lay beside his omega and latch onto the other. He’s pretty sure he’s drooling over the thought and he wipes his hand over his mouth when Izuku’s nose scrunches suddenly. He looks up at his Kacchan, and Katsuki knows that look. Blown out pupils, blushing cheeks, and a sinful look in his eyes.
Shit, Katsuki thinks. He needs to calm himself down if he’s gotten worked up enough that Izuku can smell him and look at him like that.
Sure enough, Katsuki can feel his dick twitching to life at the thought of bedding his omega for the first time in months. But as soon as it came, as soon as that delectable omega of his scent reached his nostrils, baby Hikari coos, drawing Izuku’s attention away from him. A weird scent permeates the room, frustration, anger, sadness, and a mask of fake cheer. Katsuki’s so tuned to Izuku that he’s striding across the room before he can stop himself.
“‘Zuku, honey,” Katsuki cups his omega’s cheek and leans in to nuzzle his neck, a soft comforting rumble building in his chest. “You’re gonna get horny whether Hikari’s around or not.”
”Kacchan!” Izuku squawks, covering their four-month-old’s ears, as if she had any clue what was going on.
“It’s okay,” Katsuki huffs out a laugh. “I’ll take care of you tonight, my love. You’ll see that your alpha will make it all okay.”
Izuku shivers at the raspy quality Katsuki’s voice takes on, looking up at him with that admiring look he’s worn since they were kids. Katsuki will never get tired of it, of enthralling Izuku so much that that’s the beautiful face he gets rewarded with. He kisses Izuku’s forehead softly, lingering there longer than necessary as he strokes his cheek, before pulling away to kiss Hikari’s forehead too and catch an up-close whiff of the delicious milk she’s suckling down. It’s pitiful to be jealous of your own pup suckling at your mate’s milk, but Katsuki never claimed to be a saint.
A timer goes off in the kitchen and Katsuki’s reluctantly pulling away from his family. All he has to do is focus on dinner and getting Hikaru to bed, then Izuku is all his for the night.
*****
“Kacchan, I can do it,” Izuku says, peeking around the door of the nursery.
Katsuki ignores him, smiling as he tickles Hikari’s belly. The baby giggles, flailing her arms as she babbles happily up at her father.
“Hikari, sweet girl, please tell your Mommy she is worrying too much and Daddy’s got it just fine.”
Izuku huffs behind him as Hikari continues to coo, grabbing Katsuki’s finger and squeezing. Her eyes are tired and droopy, she’s ready to sleep, but she’s still fighting to giggle at Katsuki. It’s endearing as it is annoying that Izuku is acting like his husband is a stranger who has never dealt with a pup before. Of course, putting Hikari to bed is usually Izuku’s job since he nurses her to sleep, but Katsuki’s done it before. It’s no different from what he’s done all day, tending to Hikari, but Izuku probably assumed Katsuki would hand her off for their nightly routine.
“But, Kacchan, i’ll be all full in the morning!”
“And that’s just what we want, isn’t it, sweetie?” Katsuki smirks, righting Hikari’s pajamas after changing her and lifting her to pepper her face in kisses. “Now tell Mommy good night.”
Katsuki cradles their daughter to him, refusing to let Izuku take her from him but offering her to be kissed and scented before bed.
“You’re so mean to me,” Izuku pouts, big, green eyes flicking up to look at him as he scents Hikari.
“And yet, I’m going to be so good to you later,” Katsuki growls, plucking the bottle from Izuku’s hand and slowly shutting the door to the nursery on him. “Why don’t you go get ready, ‘Zuku? Daddy won’t be long~”
Izuku’s round eyes grew bigger as he stiffened, the unmistakable delectable scent of his wafting through the door as it shut.
“He’s just too easy,” he chuckles to himself as he flicks the light off and walks precariously with Hikari over to the rocking chair in the corner of the room.
Katsuki settles into the plush chair and rocks softly as he gets Hikari into position for her bottle. The soft glow of the stars illuminated on the ceiling takes a few moments for Katsuki to adjust to, but when he looks down and sees his precious girl looking up at him with round eyes that mirror his own, his breath nearly catches in his throat. Hikari is all Izuku. There’s no denying which omega birthed her. The only genes that put up a fight from Katsuki were his ruby red eyes, and that’s just fine with him. He hopes she gets Izuku’s temperament as well.
Hikari’s got unruly green hair already and freckles that look like they were lovingly painted on in the exact pattern by the angel who did Izuku’s. Hikari blinks, reaching up a hand to grab at Katsuki’s wrist and the world suddenly zeroes in on just this moment and room. Hikari’s gentle sucking and soft sound machine are the only sounds in the room. It’s the quiet moments like this that make Katsuki fully understand Izuku’s all consuming anxiety over Hikari.
The world is so big, and she is so tiny. He’s a hero, and he knows all the ways in which a beautiful little soul like her can get hurt. As Hikari’s eyes slip shut, no longer trapping her father in her gaze, Katsuki’s chest feels less tight. He breathes slowly, releasing that anxiety of something happening to his family. Hikari has one crazy parent, she definitely doesn’t need two. Katsuki has to be strong for both he and Izuku until he can help his mate out of his anxious spiral.
Now that Hikari is falling asleep, Katsuki rests his head back and mindlessly hums a tune. He doesn’t think anything of it until he recognizes it as something his dad used to sing to him when he was younger. Katsuki smiles fondly at the memory of his old man and starts to sing the words he remembers. Soon, the bottle is empty and Hikari is passed out in his arms, snoozing peacefully. If Katsuki didn’t have a waiting omega who desperately needed some sense pounded into him, he’d more than happily fall asleep with his little one in his arms.
He gingerly carries her over to her crib and lowers her onto her back gently. She scrunches up her little face for a moment, but Katsuki soothes her with a few gentle hushes and rubs her belly. She’s been pretty good about sleeping through the night, so Katsuki quietly whispers his plea to her to stay asleep tonight and slips out of the room.
Katsuki’s blood is pumping and he feels like horny pheromones are rolling off of him in waves before he’s even halfway down the hall. He can’t help but strip as he goes. He’s already near salivating at the thought of his omega, laid out on the bed, ready and waiting for him. Instead, he throws the door open to their bedroom and deflates.
Izuku isn’t ‘ready and waiting,’ slick dripping down his thighs, whining as he tries not to touch himself because it feels better when Kacchan does it. That was pre-pup Izuku. Post-pup, ball-of-anxiety Izuku is curled up in just his boxers, holding the baby monitor close to his face, and softly crying.
“‘Zuku, what’s wrong, baby?” Katsuki rushes to Izuku’s side, curling up beside him and trying real hard to ignore his obvious, throbbing boner pressing against his omega’s ass.
“N-nothing,” Izuku hiccups, but a growl from Katsuki has him sighing and turning in his hold. “You were singing to her…”
Katsuki huffs out a breath of laughter and nuzzles his nose against Izuku’s.
“That bad, huh?”
“No!” Izuku sobs lightly. “It was beautiful, you’re beautiful, and Hikari is beautiful. I’m so lucky!”
“Oh, ‘Zuku,” Katsuki purrs.
He takes the monitor from Izuku’s hands and wipes at his omega’s tears, chuffing softly in his chest to calm Izuku. His poor sensitive love.
“I’m the lucky one,” Katsuki continues. “I have the most amazing and beautiful omega, strong as fuck and too caring for his own good. And our pup, she’s the most precious thing in the world to me.”
New tears well in Izuku’s eyes, and Katsuki cups his cheeks to kiss him.
“I don’t… why is this so hard? Why can’t I..?”
“Shh, baby. It’s hard and that’s okay, but you don’t have to worry. I’m here for you and Hikari. It will get easier. You did so good for me today, letting me take care of Hikari. You remember the first time we brought her home and you snapped at me when I tried to take her from you?”
“Yeah?” Izuku sniffles out a giggle.
“And you don’t do that anymore, right?”
“Mn mn.”
“It will get easier, my love. You’re not the only one to go through this, and I promise we’ll get through it together. Now,” Katsuki’s voice takes on a soft rumble as he presses kisses down Izuku’s jaw. “Daddy spent all day taking care of baby, will Mommy let Daddy take care of him all night?”
Izuku let out a strange noise between a squeak and a purr, stiffening in Katsuki’s hold. He immediately glances over at the nightstand where Katsuki had placed the monitor, reaching instinctively for it.
“What if she cries? What if she needs me? What if she stops breathing?”
Katsuki reaches for Izuku’s hand, pulling it up to his mouth and pressing a soft kiss.
“If she cries, I'll handle it. She’s not going to stop breathing. You’re stressing yourself out for nothing, but you’re gonna be good for me and let me relax you, right?”
Katsuki’s hand slowly glides down Izuku’s side, gripping his hip softly.
“I-I’ll try..”
“Good omega,” Katsuki growls and Izuku chirps in response.
Katsuki lowers himself against Izuku’s body, threading his fingers through both of Izuku’s and pins them against the bed as he kisses down Izuku’s body. The muscles in his stomach twitch and flex. The nerves they both feel are palpable. It’s the first time they’ve been intimate since Hikari came into the world, and it almost feels more like their first time than their actual first time did.
The closer he gets to his omega’s pussy, the headier Izuku’s scent gets. It drives Katsuki wild. His knot is already forming and throbbing. Katsuki only takes his hands out of Izuku’s once he’s licking at the waistband of the omega’s boxers. He needs them off and he rips them off with a reckless ferocity. Katsuki growls as he’s greeted with the pretty pink of Izuku’s pussy.
The pussy that he’s knotted too many times to count, the pussy that birthed his pup into the world, his pussy.
“Mine,” Katsuki growls as he dives in, tongue lapping up the little bit of slick he finds there, hoping to coax more out, get his little omega nice and ready.
“K-Kacchan, wait.”
Katsuki glances up to make sure there’s no real problem with Izuku and then continues, sucking his twitching clit into his mouth. Izuku keens, quickly clamping his hand over his mouth as his hips cant against Katsuki’s face.
“That’s it. That’s my omega,” Katsuki huffs into Izuku’s puffy slit, drooling as he tastes more slick. “Feels good to let your alpha take care of you doesn't it?”
Izuku moans in response but it isn’t enough for Katsuki.
“Tell me it feels good, omega.”
Katsuki’s supposed to be fucking Izuku into another plane of existence, but he’s so affected by his omega, he has to reign himself in to focus.
“F-Feels good, Kacchan..”
“What feels good, omega?”
Katsuki’s tongue flicks quickly over Izuku’s clit as he presses two fingers into his tight heat. Izuku’s fingers tug at his alpha’s hair, hips rising from the bed again.
“That! W-when Kacchan licks me,” Izuku corrects.
It’s not the downright nasty dirty talk they used to have, but that’s okay. Izuku, all shy like this, is just as good as his slutty omega begging for his alpha’s knot. Soon, Izuku will have that demureness fucked right out of him.
“Mm, good.”
A growl rumbles deep in Katsuki’s chest and he eats Izuku’s pussy with abandon. It’s been too long since he feasted on his omega’s slick. Not even All Might himself could pull him away from the nectar that gushes from Izuku’s hole. But Izuku’s covering his mouth, muffling those delectable sounds, and Katsuki is too far gone to order him to stop holding back. He rips his omega’s hands away, chuffs, and sucks his clit harshly while massaging his g spot.
Izuku cums with a cry, gushing slick and cum all over Katsuki’s face. Izuku’s actually so far gone from the intensity of his orgasm, crying out his alpha’s name as he keeps his feet planted to hump his twitching pussy against Kacchan’s tongue. In the back of his mind, the part that still maintains some semblance of sanity, he thanks his past self for turning up Hikari’s sound machine.
“K-Kacchan… enough.. stop..”
Izuku pushes weakly at Katsuki whose tongue is as deep in his omega’s hole as he can get it, licking up every last drop. Katsuki growls, annoyed to be pushed away, but his omega’s trembling thighs prove how overstimulated he is. Regretfully, Katsuki pulls away and licks back up Izuku’s stomach, stopping at Izuku’s pert nipples. He snuffles, the scent of milk stopping him in his tracks.
His tongue laves over the drop trailing down his pec before sucking his nipple into his mouth. Katsuki’s been waiting for this moment, to drink that sweet omega milk straight from the source. The sweetness coats his tongue as he suckles, his other hand massaging Izuku’s other tit to squirt milk out. That’s okay. Katsuki’s gonna lick up every last drop, make sure none of it is wasted.
“Kacchan! That’s for Hikari!”
Izuku’s got one hand pushing at his alpha’s head, while the other is tangled in his blond locks, keeping him pressed against his dripping chest. Katsuki glances up at Izuku with pupils so dilated, the pretty red of his eyes are eclipsed.
“You’ll make more,” Katsuki huffs out, hot breath ghosting over Izuku’s leaking nipple, causing him to shiver.
Izuku’s protests fall on deaf ears as Katsuki switches to the other neglected nipple. As he drinks, Katsuki scoops his arms under Izuku’s ass, getting him into position before Katsuki grabs his aching cock to drag through his omega’s folds.
“Gonna let me knot this pussy, ‘Zuku?” Katsuki pulls away from Izuku’s pec to growl in his ear, nibbling at the claiming bite on his throat. “Want me to put another pup in you?”
“Another?” Izuku squawks out, his head turning to look at the monitor.
Katsuki lifts his head and catches Izuku’s cheek, forcing him to look only at him. It’s silent between them for a moment as Katsuki’s cock presses at Izuku’s tight entrance. Both of them panting and Izuku wears the prettiest blush high on his cheeks.
“Let me pup you again, Izuku. Let’s give Hikari a brother or sister.”
Izuku’s eyes go half-lidded, his legs wrapping around Katsuki’s waist as he uses his heels to push Katsuki more into him.
“Pup me, Kacchan. Knot my pussy.”
Katsuki’s teeth sink into Izuku’s throat, reclaiming his omega as blood floods his mouth and his cock slams into the only pussy he’s ever known.
“Daddy!” Izuku cries out, his pussy clenching around Katsuki’s thick cock.
They haven’t indulged in Izuku calling him Daddy since he got pregnant. He feared he’d never hear it again, but Katsuki snarls and licks up the blood as his hips thrust too fast to stop.
“This okay? Daddy treating you okay?” Katsuki rasps, remembering to check on his omega. He knows he probably started moving too fast, but the way Izuku claws at his back tells him all he needs to know.
“Don’t you dare stop, Alpha. This is how I want Daddy to fuck me.”
That’s all Katsuki needs to hear, his cock hammering into Izuku’s tight hole. He puts his hands back under Izuku’s thighs and starts folding him in half.
“There’s my omega. So good for me. You needed this, didn’t you, baby?”
Izuku’s too far gone to answer, a mess of sweet little moans and incoherent babbling as he feels Katsuki’s knot knocking against him, ready and eager to fill him.
“You want this knot, omega? Beg for it. Beg me to pup you.”
Katsuki cruelly chooses that moment to rub Izuku’s clit in time with his harsh thrusts.
“K-Kacchan.. Alpha..”
“Words, Izuku. Use your words to tell Daddy what you want.”
Katsuki didn’t anticipate being so tough on Izuku at this moment. He wanted to be gentle with his mate, ease him in and work him up to a mind shattering good time, but when Izuku sobs, he knows it’s fine. Izuku got there just the way he wanted him to.
“Daddy, give me pups. Fuck me with your knot. Need it, need you, Daddy!”
He captures the omega’s lips fiercely as he thrusts once, twice, three more times before his knot catches. Izuku’s pussy spasms, milking his cock for all its worth and flooding his womb. The kiss slows, but Katsuki doesn't stop pumping his knot into Izuku, making sure he drains Izuku and himself.
Those last few minutes drag on in the best way. Katsuki’s reluctant to pull away from Izuku, worried that his panic will set back in. But when Izuku stops holding him so tightly while refusing to unwrap his arms and legs from around him, Katsuki finally pulls back.
Izuku’s got a content smile on his face, eyes fluttering open to surge up and pepper kisses on Katsuki’s face. His gentle purrs rumble through both of them and Katsuki can’t help but laugh. While his omega is distracted, he checks the monitor to make sure Hikari didn’t move or wake up to her parents' aggressive mating. He notices Izuku didn’t make a move to do the same and rewards him with a few more pumps of his knot.
“Don’t think I’m pupped yet,” Izuku pouts, looking up dazed and lovestruck at his alpha.
“When my knot goes down, trust me, baby, Daddy’s not letting you leave this bed until you're pupped again.”
Normally, the afterglow of his knot fit snugly in his mate’s pussy is his favourite part of their whole mating, but this time Katsuki wishes his knot would go down just a little so he can pull out and fill him all over again. Izuku trills at the thought of going again and nuzzles his nose against Katsuki’s, going quiet for a moment.
“Have I been good enough to check the monitor, Daddy?” Izuku whispers softly, that same cute pout on his lips.
Caught off guard, Katsuki lets out an undignified guffaw of laughter before rolling his eyes fondly.
“You get 5 seconds to look, baby.”
Izuku pecks him on the lips and quickly turns his head to look at the monitor, a quick glance just to check and his focus is back on his Kacchan.
“Good boy,” Katsuki praises softly, kissing him again and rolling them over to put Izuku on top of him. “Why don’t you keep being a good boy for me and ride my knot? Let’s see if a can wring a few more orgasms from that pretty pussy of yours?”
Izuku’s head tips back, moaning out for his alpha as Katsuki swirls the pad of his thumb in slow circles around his clit.
“Mm, yes, Daddy~” Izuku purrs, looking back down at Katsuki as he slowly starts to bounce on his alpha’s knot.
Katsuki’s big hands go to wrap around Izuku’s waist, and he briefly thinks about how tired he’s going to be when he takes care of Hikari tomorrow while his omega rests after they fuck all night. But as Izuku puts his hand on Katsuki’s abs and moves his hips in circles, all thoughts of Hikari leave his head until morning. He thinks his omega finally does the same.